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Diffstat (limited to 'Tools/config/ax_cxx_compile_stdcxx_11.m4')
| -rw-r--r-- | Tools/config/ax_cxx_compile_stdcxx_11.m4 | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/Tools/config/ax_cxx_compile_stdcxx_11.m4 b/Tools/config/ax_cxx_compile_stdcxx_11.m4 deleted file mode 100644 index 138ca2aca..000000000 --- a/Tools/config/ax_cxx_compile_stdcxx_11.m4 +++ /dev/null @@ -1,121 +0,0 @@ -# ============================================================================ -# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html -# ============================================================================ -# -# SYNOPSIS -# -# AX_CXX_COMPILE_STDCXX_11([ext|noext], [nostop]) -# -# DESCRIPTION -# -# Check for baseline language coverage in the compiler for the C++11 -# standard; if necessary, add switches to CXXFLAGS to enable support. -# CXX11FLAGS will also contain any necessary switches to enable support. -# HAVE_CXX11_COMPILER will additionally be set to yes if there is support. -# If the second argument is not specified, errors out if no mode that -# supports C++11 baseline syntax can be found. The first argument, if -# specified, indicates whether you insist on an extended mode -# (e.g. -std=gnu++11) or a strict conformance mode (e.g. -std=c++11). -# If neither is specified, you get whatever works, with preference for an -# extended mode. -# -# LICENSE -# -# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com> -# Copyright (c) 2012 Zack Weinberg <zackw@panix.com> -# Copyright (c) 2012 William Fulton <wsf@fultondesigns.co.uk> -# -# Copying and distribution of this file, with or without modification, are -# permitted in any medium without royalty provided the copyright notice -# and this notice are preserved. This file is offered as-is, without any -# warranty. - -#serial 1 - -m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [ - template <typename T> - struct check - { - static_assert(sizeof(int) <= sizeof(T), "not big enough"); - }; - - typedef check<check<bool>> right_angle_brackets; - - int a; - decltype(a) b; - - typedef check<int> check_type; - check_type c; - check_type&& cr = static_cast<check_type&&>(c); -]) - -AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl - m4_if([$1], [], [], - [$1], [ext], [], - [$1], [noext], [], - [m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl - m4_if([$2], [], [], - [$2], [nostop], [], - [m4_fatal([invalid argument `$2' to AX_CXX_COMPILE_STDCXX_11])])dnl - AC_LANG_ASSERT([C++])dnl - ac_success=no - CXX11FLAGS= - AC_CACHE_CHECK(whether $CXX supports C++11 features by default, - ax_cv_cxx_compile_cxx11, - [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], - [ax_cv_cxx_compile_cxx11=yes], - [ax_cv_cxx_compile_cxx11=no])]) - if test x$ax_cv_cxx_compile_cxx11 = xyes; then - ac_success=yes - fi - - m4_if([$1], [noext], [], [dnl - if test x$ac_success = xno; then - for switch in -std=gnu++11 -std=gnu++0x; do - cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch]) - AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch, - $cachevar, - [ac_save_CXXFLAGS="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS $switch" - AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], - [eval $cachevar=yes], - [eval $cachevar=no]) - CXXFLAGS="$ac_save_CXXFLAGS"]) - if eval test x\$$cachevar = xyes; then - CXXFLAGS="$CXXFLAGS $switch" - CXX11FLAGS=$switch - ac_success=yes - break - fi - done - fi]) - - m4_if([$1], [ext], [], [dnl - if test x$ac_success = xno; then - for switch in -std=c++11 -std=c++0x; do - cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch]) - AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch, - $cachevar, - [ac_save_CXXFLAGS="$CXXFLAGS" - CXXFLAGS="$CXXFLAGS $switch" - AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])], - [eval $cachevar=yes], - [eval $cachevar=no]) - CXXFLAGS="$ac_save_CXXFLAGS"]) - if eval test x\$$cachevar = xyes; then - CXXFLAGS="$CXXFLAGS $switch" - CXX11FLAGS=$switch - ac_success=yes - break - fi - done - fi]) - - if test x$ac_success = xno; then - if test x$2 != xnostop; then - AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.]) - fi - else - HAVE_CXX11_COMPILER=yes - fi -]) |